OK, so finally found my running problems, unplugged the lambda and its running MUCH better!
Looking on ETKA, there are 2 lambda sensors.
030 906 265J - PY, AAU, 3F, NZ
and
030 906 265N - PY for models without catalyst... ]
I have a decat pipe so would it be better to get the second one? Will it even make a difference?
Thanks!